Roller-skate



(No Model.)

D. A. ROOT.

ROLLER SKATE.

No. 332,111. Patented Dec. 8, 1885.

UNITED STATES PATENT OFFICE.

DEXTER A. ROOT, OF BAY CITY, MICHIGAN.

ROLLER SKATE.

SPECIFICATION forming part of Letters Patent No. 332,111.dated December 8, 1885.

Application filed May 13, 1885. Serial No. 165,300. (No model.)

To aZZ whom it may concern.-

Be it known that I, DEXTER A. Room, of Bay City, in the county of Bay and State of Michigan, have invented new and useful Improvements in Roller-Skates; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and novel improvements in rollerskates; and the invention consists in the peculiar construction, arrangement, and various combinations of the parts, all as more fully hereinafter set forth.

Figure 1 is a perspective view of one of my improved roller-skate hangers with one roller removed. Fig. 2 is a vertical longitudinal section through the axis of the rock-shaft. Fig. 3 is a cross-section on line 00 x in Fig. 2. Fig. 4 is a cross-section on line gfy in Fig. 2.

As both ends or heel and toe of the skateplate is provided with the same device or hanger, I will confine my description solely to one.

In the accompanying drawings, which form a part of this specification. A represents the foot-plate of a roller-skate, which is provided with any of the known and suitable means for securing it to the foot of the wearer. Rigidly and at the proper point to the under side of this plate I secure a hanger, B,which has two downwardly-projecting ears, 0, at the lower ends of which there are formed the inwardly-projecting lugs a.

D is a truck or carriage, through which passes the axle E, upon which are mounted the rollers F, as in the ordinary manner. At each end of this carriage, the length of which is at right angles to the axle E, are formed two upwardly-projecting ears, G, a sufficient distance apart to embrace freely the ears 0 of the hanger, and through these ears 0 and G there is passed a rock-shaft, H, which secures the truck and hanger together, the truck having a free rocking motion or movement upon such shaft.

I is a coil-spring placed upon and around the rock-shaft H, its free end being bent downwardly, one end projecting alongside 0f the truck upon one side thereof, while its opposite end (at the other end of the truck) passes down along and against the opposite side of the truck, while the truck is in its normal condition or at rest. The ends of the spring also rest against the lugs a.

In practice we will suppose a skater to be skating upon a pair of skates constructed upon my improved principle, and that he is desirous of turning to the left. In the construction shown the skater, in making such turn, presses his foot, if the left one, to the outside, and if the right one to the inside. which turns the hangers of that skate upon the axle or shaft H, the lug a at the front of the hanger being then a point of resistance against the uncoiling or turning of the spring, while the rear end of the truck, coming in contact with its respective end of the spring, exerts a torsional strain upon it, rendering it easy for the skater to make short turns, while the torsion of the spring acts as arestraint against a too rapid movement of the parts. As soon as the foot is released or raised from the floor the reaction of the spring compels the truck to assume its original and normal position.

What I claim as my invention is In a roller-skate, the hangerB,With ears 0, said ears being provided with lugs a, in combination with a truck, D, the rock-shaft H, journaled to the ears of said hanger and truck, and a coil-spring, I, placed around said shaft and between the ears of the hanger, and arranged to compel said truck to automatically assume its normal position by the torsional action of the spring, substantially in the manner and for the purposes specified.

DEXTER A. ROOT.

Witnesses:

H. S. SPRAGUE, CHARLES J. HUNT. 

